ps4 pwld EV 1403
LINEAR HEAT DETECTION
PROTECTOWIRE
THE GLOBAL LEADER
IN LINEAR HEAT DETECTION
PROTECTOWIRE FEATURES:
■■ Line coverage…continuous sensitivity.
■■ Withstands severe environmental conditions.
■■ Approved for hazardous locations.
■■ Easy to install, test, and splice.
■■ Compatible with other initiation devices on same circuit.
■■ Separate pre-alarm and alarm actuations (Type TRI).
INTRODUCTION
Protectowire Linear Heat Detector is a proprietary cable that detects heat anywhere
along its length. The sensor cable is comprised of two steel conductors individually
insulated with a heat sensitive polymer. The insulated conductors are twisted
together to impose a spring pressure between them, then wrapped with a protective
tape and finished with an outer jacket suitable for the environment in which the
Detector will be installed.
Protectowire is a fixed temperature digital sensor and is therefore capable of
initiating an alarm once its rated activation temperature is reached. At the rated
temperature, the heat sensitive polymer insulation yields to the pressure upon
it, permitting the inner conductors to move into contact with each other thereby
initiating an alarm signal. This action takes place at the first heated point anywhere
along the Detector’s length. It does not require that a specific length be heated in
order to initiate an alarm nor is system calibration necessary to compensate for
changes in the installed ambient temperature. Protectowire Linear Heat Detector
provides the advantages of line coverage with point sensitivity.
Protectowire Features & Benefits
Can be connected to a standard Technoswitch Fire Control Panel or when used
with a PW PIM/430DE Control Panel the Detector will activate a display, showing the
location in metres of an overheat or fire condition anywhere along its length.
Sensitivity not effected by changes in ambient temperature or length of cable used
on the detection circuit. Compensating adjustments are not required.
Steel inner conductors and select outer jackets, provide resistance to mechanical
damage.
Simple to install and splice with common tools. Junctions can be made without
effecting the integrity of the system.
Compatible with other types of alarm initiating devices on the same circuit such as
manual call points, heat detectors and smoke detectors.
Can be installed in hazardous areas when used with suitably approved Control
Panels.
Full range of temperatures and models available to accommodate the most
demanding applications.
Different temperature detectors may be utilized in the same initiating circuit.
Available on stainless steel messenger wire for installations where mounting is
difficult such as large open areas.
Ideally suited for activation of extinguishment equipment, such as deluge or preaction sprinkler systems.
Protective Tape
www.technoswitch.co.za
Outer Jacket
Steel Conductors
Heat Sensitive
Polymer
LINEAR HEAT DETECTION
PROTECTOWIRE
APPLICATIONS & INDUSTRIES
Ideally suited to industrial high risk hazards as well as many
types of commercial applications, Protectowire Linear
Heat Detector has unique advantages over other types of
detectors, especially when difficult installation factors or severe
environmental conditions are present.
■■ Cable trays
■■ Pipelines
■■ Conveyors
■■ Bridges, piers, marine vessels
■■ Dust collectors/baghouses
■■ Refrigerated storage
■■ Cooling towers
■■ Tank farms
■■ Warehouses/rack storage
■■ Aircraft hangars
■■ Mines
■■ Power distribution apparatus: switchgear, transformers, motor control centers
DESCRIPTION
The Detector’s product range consists of five distinct types of cable. Each designation
identifies a specific outer jacket material which has unique characteristics that have been
selected to accommodate the widest range of installation environments. All specifications are
subject to change without notice.
EPC, TRI
Polyvinyl Chloride (PVC)
EPR
Polypropylene Rubber
EPC – Type EPC Protectowire consists of a durable flame retardant vinyl outer jacket.
This series is best described as multi-purpose and is well suited to a wide range of
both commercial and industrial applications. The outer jacket provides good all-around
performance for most installations. It features low moisture absorption, resistance to many
common chemicals, and excellent flexibility at low temperatures.
EPR – The EPR series contains an extruded flame retardant jacket of polypropylene elastomer
with a special UV stabilizer added to enhance weathering performance. It is intended for a
wide range of industrial applications and is characterized by high resiliency, good abrasion
resistance, excellent weathering properties, and flexibility over a wide temperature range.
EPN
Nylon over PVC
TRI – Type TRI Protectowire is a unique dual temperature detector which is capable of initiating
separate pre-alarm and alarm signals once each of its rated activation temperatures is
reached. The Detector consists of a durable vinyl outer jacket which features low moisture
absorption, resistance to many common chemicals, excellent flexibility and flame retardant.
XCR – Type XCR utilizes a high performance fluoropolymer jacket.This detector is specifically
designed for use in applications where extreme environmental and product performance
criteria must be met. In general, the flame retardant, low smoke XCR jacket provides excellent
abrasion resistance and mechanical properties over a broad range of temperatures. It provides
excellent chemical and permeation resistance to a wide variety of acids, bases, and organic
solvents as well as simple gases. In addition, the jacket exhibits very little change in tensile
properties upon outdoor exposure to sunlight and weather.
XLT – Protectowire Type XLT is a unique detector that has been designed for use in cold
storage facilities and other applications that require a low alarm activation temperature. The
outer jacket consists of a proprietary flame retardant polymer that is specifically formulated to
provide low moisture absorption, good chemical resistance, and excellent low temperature
environmental performance.This detector has been UL and FM tested to –51°C.
XLT
Proprietary Polymer
LINEAR HEAT DETECTION
PROTECTOWIRE
TEMPERATURE RATINGS
Model Number
Alarm Temperature
Max Recommended
Ambient Temperature
EPC
Multi-Purpose/ Commercial & Industrial
Applications
155-EPC
190-EPC
220-EPC
280-EPC
356-EPC
68˚C
88˚C
105˚C
138˚C
180˚C
38˚C
66˚C
79˚C
93˚C
105˚C
EPR
Good Weathering Properties & High
Temperature Jacket Performance
155-EPR
190-EPR
68˚C
88˚C
38˚C
66˚C
TRI
Applications
Requiring Pre-alarm
6893-TRI
Pre-alarm: 68˚ C
Alarm: 93˚C
38˚C
XCR
High Performance/ Industrial
Applications Excellent Abrasion &
Chemical Resistance
155-XCR
190-XCR
220-XCR
280-XCR
356-XCR
68˚ C
88˚ C
105˚C
138˚ C
180˚C
38˚C
66˚C
79˚C
93˚C
121˚C
XLT
Multi-Purpose/ Excellent Low Temp.
135-XLT
57˚ C
38˚C
Product Type
SPECIFICATIONS
Maximum Voltage Rating: 30 VAC, 42 VDC
Min. Bend Radius: 6.4cm
Resistance 2W Models:
.656 ohms/m
Diameter: Nominal 4mm
Resistance TRI-Wire: .984 ohms/m
Weight: Nominal 3.6 kg/152m
TRI-Wire Conductor Color Code: Pink = 68°C
Clear = 93°C
Black = Common
INSTALLATION ACCESSORIES
A comprehensive range of mounting and installation accessories are available for the installation of Protectowire Linear Heat
Detector. These include several types of clips, straps, drive rings, beam clamps, cable standoffs and connectors. Their proper
use assures a neat and reliable installation.
Messenger wire is also available for any model Detector on special order. It consists of high tensile strength stainless steel
wire, which is wound around the Detector at the rate of approximately one turn per foot. It is a carrier or support wire which is
designed to simplify the installation of the Detector in areas where mounting is difficult due to the lack of appropriate support
structures or mounting surfaces.When using messenger wire to support the Detector, turnbuckles and eyebolts must be
employed at each end of a run to place tension on the support wire. The maximum Detector run length between turnbuckles
should not exceed 76m and the wire must also be supported with approved intermediate fasteners at intervals ranging from
4.5m to 15m depending upon the application. Outdoor messenger wire installations present additional challenges due to
environmental factors such as wind. Increased detector support must be provided by using additional intermediate fasteners
with closer spacing in all outdoor installations.When ordering messenger wire configurations, add suffix “-M” to the model
number. All models of Protectowire Linear Heat Detector have the same size conductors and are readily spliced together with
common tools.
CAPE TOWN
T +27 (0)21 948 4575 F +27 (0)86 638 5184
E info.ct@technoswitch.co.za
DURBAN
T +27 (0)31 266 8843 F +27 (0)86 750 6912
E info.dbn@technoswitch.co.za
HEAD OFFICE - JOHANNESBURG
Cussonia Park, Ridge Rd, Laser Park, Johannesburg
PO Box 1752, Randpark Ridge, South Africa, 2156
T +27(0)11 794 9144 F+27(0)11 794 9148 E info@technoswitch.co.za
www.technoswitch.co.za
E & OE Document No: ps4_pwlh_1403
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